Roll extension attachment



E. M. AYARS, JR., ETAL 2,801,460

ROLL EXTENSION ATTACHMENT 3 Sheets-Sheet 1 Filed July 27, 1955 E. M. AYARS, JR., ETAL 2,801,460

ROLL EXTENSION ATTACHMENT Aug. 6, 1957 Filed July 27, 1955 3 Sheets-Sheet 2 1957 E. M. AYARS, JR., EIAL 2,801,460

ROLL EXTENSION ATTACHMENT I 4 3 Sheets-Sheet 3 Filed Ju'ly 27, 1955 United States atent O ROLL EXTENSION ATTACHMENT Edward M. Ayars, Jr., Swarthmore, and Arthur W. Little,

Mauoa, Pa., assignors to American Viscose Corporation, Philadelphia, Pa., a corporation of Delaware Application July 27, 1955,Serial No. 524,751

7 Claims. (Cl. 29-415) 'The invention relates to an extension attachment for rolls.

lnlthe use of various types of apparatus utilizing guide,

feed, or pressure rolls, it is often desirable or essential to 1 warp beams are equal in over-all length, that is 42 inches, but the larger size beams (21-inch flange) are formed with reinforced or thickened flanges for strength, thus reducing thebetween-the-flange distance. A change-over from one size of pressure roll to another is a tedious and timeconsumingtask requiring from 2 to 3 man-hours of labor, during which period the productive capacity of the apparatus is at a standstill. In addition, the known manner of bodily shifting from one size of pressure roll to another requires at least two different sizes of pressure rolls to be kept. on hand. It is therefore an object of this invention to provide a new and more satisfactory attachment for use, in extending the lengths of rolls.

Another object is the provision of an extension attachment which is adapted to provide a roll, to which it is applied, with a smooth and continuous extended length.

Still another object is the provision of roll extension attachment which eliminates the need for an inventory of a variety of different rolls, requires a minimum of modification of the roll itself, and which in no way impairs the original utility of the roll.

A further object is the provision of a roll extender which may be quickly and easily applied and removed from. the roll without the use of any special skills or adjustments and without the removal of the roll from its supporting structure, is simple in construction and use, and can be economically fabricated by mass production methoils from readily available materials.

1 These and other. objects and advantages of the invention will. beapparent from the following description and accompanying drawing in which:

Fig.1 is a fragmentary end view of a warp beam and a cooperating pressure roll having the extension attachment of the present invention applied thereto;

' Fig. 2 is a top view of the structure shown in Fig. l as seen from the line 22;

fFig. 3 is a fragmentary top view illustrating the pressure. roll cooperating witha larger size warp beam, and with the extension attachment removed;

:Fig. 4 isa partial longitudinal section, on an enlarged scale, taken through the pressure roll approximately along the line 4-4 of Fig. 1;

Fig. 5 is a right side view of a portion of the structure shownin Fig. 4;

Fig. 6 is a view of the extension ring illustrating the ring segments in disengaged position;

2,801,460 Patented Aug. 6, 1957 "ice Fig. 7 is a right side view of the structure shown in V Fig. 6;

Fig. 8 is an edge view of a portion of an extension rin segment as seen from the line 88 of Fig. 7; and

Fig. 9 is an edge view of a portion of the mating extension ring segment as seen from the line 9-9 of Fig. 7.

The invention is directed to an extension attachment for use with various types of rolls, and particularly warping machine pressure rolls, and includes a collar adapted to be fixed within a pressure roll, adjacent to one of its ends, and an extension ring removably secured within the collar. The extension ring is preferably formed of at least two interlocking segments to enable the ring to be applied and removed from the collar without removal of the roll itself from its supporting structure. With the present invention, the shortest of the two pressure rolls normally employed, namely 39%. inches long, can be lengthened to 4034 inches for use with tricot warp beams having a l4-inch flange, while the pressure roll alone, that is without the extension attachment applied, may be used with warp beams having a 21-inch flange. Besides completely eliminating the need for the conventional longer size of pressure roll, the use of the attachment herein described greatly reduces the time necessary to effect a change from one size pressure roll to another. While the invention is described in relation to warping machine pressure rolls, it will of course be understood that the attachment is suited for general application with other types of rolls, or like structures, which are either tubular in shape or have hollowed end sections.

With reference to the drawings, Figs. 1 and 2 illustrate a warp yarn beam having a cylindrical barrel 15 and a pair of circular end flanges 17 nd 19, each of which is provided with a central hub 21 and integrally formed reinforcing ribs 23. As with the conventional warp beams, the warp yarns 24 are wound about the barrel 15 and prevented from moving laterally by the flanges 17 and 19. The beam is supported on the warping machine by a shaft 25, and is secured thereto by a locking collar 27 having a pair of radially projecting keys 29 adapted to engage within mating slots 31 formed in the hub 21 of the flange 17. The locking collar 27 and the flange of the warp beam are maintained in interlocking position by the hand wheel 33 hearing against the flange 19. For purposes of illustration and description, the warp beam shown in Figs. 1 and 2 represents the smaller of the abovenoted warp beams, namely that having a l4-inch diameter flange, while the beam shown in Fig. 3 represents the larger size warp beam having a 21-inch diameter flange 35 which, as seen in Fig. 3, is more strongly braced or reinforced by the thicker ribs 37; When the larger size beam is employed with the warping machine, the keys 39 on the locking collar 27 cooperate with the mating slots in the flange 35 in the same manner as the keys 29 and flange 17 of the smaller warp beam heretofore described. The shaft 25 is supported at its opposite ends by arms 41, which form a part of the warping machine, and is driven at a uniform speed by means not shown.

As seen in Fig. 2, the pressure roll extends between the flanges of the warp beams and is driven by its frictional engagement with the warp yarns continuously being wound on the beam. The pressure roll includes a cylindrical shell 43 and a pair of laterally spaced circular supports secured to the inner periphery of the shell 43 inwardly from its ends. The shell supports may be in the form of conventional spiders having radiating arms but are preferably constructed as shown in Fig. .2, with each including a hub 45 through which a shaft is.adapted to pass, a circular flange 47 bearing against the innerl periphery of the shell, and a continuous web 49 extending between the hub and flange. A shaft 51, having one of its ends carried by the bearing 53 of the warping machine, passes through the aligned hubs 45 of the pressure roll and is supportedat its opposite end by a removable bearing 55, also forming a part of the warping machine framework, shown in part of .57. v

As heretofore described, theuse of these different types of warp beams requires a pressure roll of a different length. However, with the teachings of the present invention, only the shortest pressure roll now utilized, namely that measuring 39% inches in length is applied to the warping machine and can be employed with either of the warp beams by applying or removing the extension attachment of the present invention. Thus, when the larger of the warp beams noted above is used, the pressure roll alone, that is with the extension attachment removed, is utilized as shown in Fig. 3. In change to the smaller of the warp beams, the pressure roll is merely extended by application of the attachment to thereby extend the effective length of the pressure roll as shown in Fig. 2.

The extension attachment as best shown in Figs. 4-9, includes a circular collar or sleeve 59 having a plurality of circumferentially spaced and radially extending countersunk openings 61. This collar 59 is inserted within one end of the pressure roll shell 43 and fixed therein by means of socket head screws 63 passing through the openings 61 and threaded into the shell 43. The external periphery of the collar 59 enters the shell 43 with a slip fit, and it is preferred to machine the inner periphery of the shell before applying the collar 59 to provide a true circular surface. The inner periphery of the collar 59 is provided with threads 65 which are adapted to cooperate with an extension ring 67 described below.

In order that the extension attachment may be easily applied without removal of the pressure roll from the warping machine, the extension ring 67 is formed of a plurality of cooperating segments, with two semi-circular segments, as shown on the drawing, being preferred. As seen in Figs. 4, 8, and 9, each segment of the ring 67 includes a semi-circular flange 69 and an integrally formed externally threaded arcuate portion 71 of reduced radius. The ring segments, when taken together, are as shown in Figs. 1 and 2 with the outer periphery of the flanges 69 forming a continuous circular surface, and the arcuate portions 71 providing a unitary tube with the external threads on these portions forming a continuous spiral.

- To enable the ring segments to be more easily handled during application and removal from the pressure roll, the confronting edge portions are preferably formed as shown in Fig. 7, with the edges of one segment being provided with notches 73 adjacent the inner periphery, while the edge portions of the other segment have correspondingly located lugs 75 adapted to interlock with the notches 73 and prevent lateral movement between the segments in a radial direction. To interlock the segments against lateral movement relative to each other in an axial direction, and thus enable the segments to be more easily handled as a single unit, the edge portions of both segments are provided with radially extending grooves 77 immediately adjacent their flanges 69. Within both of the grooves 77 of one of the ring segments are bonded rectangular keys 79 which project beyond the edge portions of the segment and are adapted to interlock with the confronting grooves 77 in the other of the pair of ring segments.

On the outer face of each of the flanges 69 are provided a plurality of circumferentially spaced openings 81 into which are snugly pressed metallic tubular inserts 83 which are adapted to cooperate with the pins of a suitable spanner wrench during application and removal of the attachment. To provide a better connection between the extension ring and the pressure roll, a thin gasket 85, as for example of felt, is bonded to the interface of each of the flanges 69.

In use, the collar 59 is fixed within the pressure roll shell 43 by the screws 63, as heretofore described, and

4 remains in fixed position at all times. The outer edge of the collar 59 and the pressure roll shell 43 are in co-planar relationship and areadapted to fit freely be tween the flanges of the larger size warp beam when the extension ring is not employed. To accommodate the pressure roll for use with the 14-inch warp beam, the ring segments are positioned on opposite sides of the shaft 51 and then interlocked, as heretofore described. The interlocked segments are then threaded as a unit into the collar 59, with the final tightening strokes being applied by a spanner wrench cooperating with the inserts 83. To facilitate easy insertion of the extension ring into the collar 59, the free end of the arcuate portions 71 are preferably beveled at 87. A change-over to the shorter length or original length of pressure roll is accomplished by mere removal of the extension ring, with the collar 59 remaining in place as described above. While the connection between the extension ring and the collar 59 has been limited in the description to cooperating threads, it is of course obvious that other connecting means, such as expanding cams or Wedges may be em: ployed. Any suitable materials may be employed in formation of the collar and the extension ring segments of the present invention. However, a laminated Bakelite having a paper base has been found to be satisfactory and is preferred.

It is seen from the above description that the objects of the invention are well fulfilled by th structure described. The description is intended to be illustrative only and it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined by the appended claims. 4

We claim:

1. In combination with a cylindrical body having at least one end portion of hollow construction, an extension attachment including a collar fixed within said hollow portion of said cylindrical body, an extension ring, means removably securing said ring within saidcollar, said extension ring including a plurality of cooperating arcuate segments each having a peripheral portion of a diameter substantially equal in diameter to the external diameter of said cylindrical body and forming a continuous surface therewith, and means for interlocking said arcuate segments.

2. In combination with a cylindrical body having at least one end portion of hollow construction, an annular collar fixed within said hollow portion with one of its ends coplanar with the adjacent end of the cylindrical body, a plurality of arcuate segments which together cooperate to form an extension ring, said extension ring including a first annular portion having an externaldiameter substantially equal to the external diameter of said cylindrical body and a second annular portion of reduced external diameter and projecting into said annular collar, and cooperating means on said second annular portion and said collar for removably securing said extension ring to said cylindrical body with the end of said first annular portion which is adjacent said second annular portion abutting against the adjacent ends of said collar and said cylindrical body and with said first annular portion forming a substantially continuous surface with the exterior surface of said cylindrical body.

3. A construction as defined in claim 2 further including means locking ,said cooperating arcuate segments against relative movement in directions extending longitudinally and radially of said ring.

4. A construction as defined in claim 3 wherein said locking means includes interlocking projections and slots at the terminal portions of each of said arcuate segments.

5. A construction as defined in claim 3 wherein said locking means includes a key projecting from the-terminal portion or one of saidarcuate. segments and extends.substantially radially of said ring, a correspondingly formed groove in the opposing terminal portion of an adjacent arcuate segment for receiving said key, a pair of notches, spaced longitudinally of said ring, formed at the terminal portion of one of said arcuate segments and extending in a circumferential direction relative to said one arcuate section, a pair of lugs projecting from the opposing terminal portion of an adjacent arcuate segment and being received within said notches.

6. A construction as defined in claim 5 wherein said notches open on the internal surface of said second annular portion and are formed in the same terminal portion as said key and at opposite sides thereof.

7. In combination with a circular section tubular roll, at least two arcuate segments cooperating to form an extension ring, said extension ring including a first portion having a circular external surface of a diameter substantially equal to the external diameter of said roll and a second portion of reduced external diameter concentric with said first portion and extending into the one end of said roll, means for removably securing said second portion of the extension ring to said. roll with the external surface of said first portion being substantially continuous with the surface of said roll, and interlocking projections and slots formed on the opposing terminal portions of said al'cuate segments for preventing relative movement therebetween along planes extending longitudinally and radially of said ring.

References Cited in the file of this patent UNITED STATES PATENTS 458,453 Goodrich Aug. 25, 1891 493,192 Stewart Mar. 7, 1893 870,853 Snuggs Nov. 12, 1907 943,356 Keeler Dec. 14, 1909 1,110,397 Martini Sept. 15, 1914 1,740,997 McGuire Dec. 24, 1929 1,946,024 Lamatsch Feb. 6, 1934 

